On Thu, Sep  1, 2016 at 01:01:35PM -0400, Peter Eisentraut wrote:
> Maybe a couple of hooks could be useful to allow people to experiment
> with this.  But the hooks should be more general, as described above.
> But I think a few GUC settings that can be adjusted at run time could be
> sufficient as well.

Couldn't SQL sessions call a PL/Perl function that could query the OS
and set max_parallel_workers_per_gather appropriately?

  Bruce Momjian  <br...@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

+ As you are, so once was I. As I am, so you will be. +
+                     Ancient Roman grave inscription +

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